22125153505505 has 4 divisors (see below), whose sum is σ = 26550184206612. Its totient is φ = 17700122804400.

The previous prime is 22125153505487. The next prime is 22125153505517. The reversal of 22125153505505 is 50550535152122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3004412088976 + 19120741416529 = 1733324^2 + 4372727^2 .

It is not a de Polignac number, because 22125153505505 - 2³⁴ = 22107973636321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212515350546 + ... + 2212515350555.

It is an arithmetic number, because the mean of its divisors is an integer number (6637546051653).

Almost surely, 2^{22125153505505} is an apocalyptic number.

It is an amenable number.

22125153505505 is a deficient number, since it is larger than the sum of its proper divisors (4425030701107).

22125153505505 is an equidigital number, since it uses as much as digits as its factorization.

22125153505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425030701106.

The product of its (nonzero) digits is 375000, while the sum is 41.

Adding to 22125153505505 its reverse (50550535152122), we get a palindrome (72675688657627).

The spelling of 22125153505505 in words is "twenty-two trillion, one hundred twenty-five billion, one hundred fifty-three million, five hundred five thousand, five hundred five".